/**
 * Copyright (C) 2010 the original author or authors.
 * See the notice.md file distributed with this work for additional
 * information regarding copyright ownership.
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.beust.jcommander;

import com.beust.jcommander.args.Args1;
import com.beust.jcommander.args.ArgsConverterFactory;
import com.beust.jcommander.args.ArgsMainParameter1;
import com.beust.jcommander.args.ArgsMainParameter2;
import com.beust.jcommander.args.IHostPorts;

import org.testng.Assert;
import org.testng.annotations.Test;

import java.util.Map;

/**
 * Test the converter factory feature.
 *
 * @author cbeust
 */
public class ConverterFactoryTest {
    private static final Map<Class, Class<? extends IStringConverter<?>>> MAP = Map.of(HostPort.class, HostPortConverter.class);

    private static final IStringConverterFactory CONVERTER_FACTORY = new IStringConverterFactory() {

        public Class<? extends IStringConverter<?>> getConverter(Class forType) {
            return MAP.get(forType);
        }

    };

    @Test
    public void parameterWithHostPortParameters() {
        ArgsConverterFactory a = new ArgsConverterFactory();
        JCommander jc = new JCommander(a);
        jc.addConverterFactory(CONVERTER_FACTORY);
        jc.parse("-hostport", "example.com:8080");

        Assert.assertEquals(a.hostPort.host, "example.com");
        Assert.assertEquals(a.hostPort.port.intValue(), 8080);
    }

    /**
     * Test that main parameters can be used with string converters,
     * either with a factory or from the annotation.
     */
    private void mainWithHostPortParameters(IStringConverterFactory f, IStringConverterInstanceFactory f2, IHostPorts a) {
        JCommander jc = new JCommander(a);
        if (f != null) jc.addConverterFactory(f);
        if (f2 != null) jc.addConverterInstanceFactory(f2);
        jc.parse("a.com:10", "b.com:20");
        Assert.assertEquals(a.getHostPorts().getFirst().host, "a.com");
        Assert.assertEquals(a.getHostPorts().getFirst().port.intValue(), 10);
        Assert.assertEquals(a.getHostPorts().get(1).host, "b.com");
        Assert.assertEquals(a.getHostPorts().get(1).port.intValue(), 20);
    }

    @Test
    public void mainWithoutFactory() {
        mainWithHostPortParameters(null, null, new ArgsMainParameter2());
    }

    @Test(expectedExceptions = RuntimeException.class)
    public void mainWithoutConverterWithoutFactory() {
        mainWithHostPortParameters(null, null, new ArgsMainParameter1());
    }

    @Test
    public void mainWithFactory() {
        mainWithHostPortParameters(CONVERTER_FACTORY, null, new ArgsMainParameter1());
    }

    @Test
    public void mainWithInstanceFactory() {
        mainWithHostPortParameters(null, new IStringConverterInstanceFactory() {
            @Override
            public IStringConverter<?> getConverterInstance(Parameter parameter, Class<?> forType, String optionName) {
                return HostPort.class.equals(forType) ? new HostPortConverter() : null;
            }
        }, new ArgsMainParameter1());
    }

    @Test
    public void mainWithSubcommand() throws Exception {
        final Args1 a = new Args1();
        final JCommander jc = new JCommander(a);

        jc.addConverterInstanceFactory(new IStringConverterInstanceFactory() {
            @Override
            public IStringConverter<?> getConverterInstance(Parameter parameter, Class<?> forType, String optionName) {
                return Integer.class.equals(forType)
                        ? new IStringConverter<Integer>() {
                    @Override
                    public Integer convert(String value) {
                        return Integer.parseInt(value) + 100;
                    }
                }
                        : null;
            }
        });

        jc.addCommand("foo", new ArgsConverterFactory());
        jc.parse("-verbose", "42");
        Assert.assertEquals(a.verbose.intValue(), 142);
    }
}

